A39e - 8…Qb6 - Symmetrical, Main Line 7.d4 (1931)

Fin du contenu

Aucune page supplémentaire à charger

← Articles plus récents
A39e — Symmetrical, Main Line 7.d4 (1931)
1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Qb6
Les coups candidats
Ambassadeurs : Obregon Rivero, Juan Carlos (5x), Wang, Yiye (4x), Kolanek, Roman (3x), Drasko, Milan (3x), Bondarevsky, Igor (2x), Honfi, Karoly (2x), Kekki, Jorma (2x), Kristensen, Leif (2x)
9.Nb3 — 33.7% (740 parties)
Ambassadeurs : Steindorsson, Sigurdur P. (3x), Cerveny, Martin (3x), Wong, Su Yi Audrey (2x), Gutierrez Herrera, Jose Antonio (2x), Petersen, Nils (2x), Hidegh, Eszter (2x), Juhant, Igor (2x), Avolio, Giovanni (2x)
9.e3 — 10.0% (219 parties)
Ambassadeurs : Evans, Nicholas Thomas (2x), Ehsandar, Peter (2x), Zamkovskaya, Violetta Aleks (1x), Rotstein, Jefim (1x), Esposito, Alfredo (1x), Estonllo, M (1x), Faleg, Alberto (1x), ABDELMUNEM SAAD (1x)
9.Ndb5 — 5.2% (115 parties)
Ambassadeurs : Wilbert, Siegfried (2x), Campomanes, Florencio (1x), Caro, Napoleon Alberto (1x), Mecking, Henrique (1x), Cotta, Eduardo (1x), Nevednichy, Boris M (1x), Saidov, Norbai (1x), Moll, Abbe (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9.Nc2 9.Nb3 9.e3 9.Ndb5
<1800 130 29% 34% 15% 8%
1800-2200 1272 42% 35% 10% 5%
2200-2600 499 57% 31% 8% 3%
2600+ 1 100% — — —
Évolution par décennie (% des parties)
Décennie N parties 9.Nc2 9.Nb3 9.e3 9.Ndb5
1950s 13 54% 23% 15% —
1960s 27 56% 19% 4% 11%
1970s 28 36% 46% 7% 4%
1980s 70 57% 26% 3% 9%
1990s 397 41% 37% 9% 6%
2000s 588 46% 33% 9% 7%
2010s 930 45% 34% 12% 4%
2020s 141 45% 33% 9% 4%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9.Nc2 45% 45% +0.2%
9.Nb3 34% 33% ▼ -1.1%
9.e3 12% 9% ▼ -2.8%
9.Ndb5 4% 4% +0.4%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 1 partie
Anand, Viswanathan — 1 partie
Ju, Wenjun — 1 partie
Parties historiques
9.Nc2 — 44.7% (980 parties)
1953 — Anay Barche vs Dely, Peter — 1/2-1/2 — HUN-ch Budapest HUN
1954 — Larsen, Bent vs Andersen, Henry — 0-1 — Copenhagen DEN
1955 — Kreppenhofer vs Muller, Wilhelm — 1/2-1/2 — Antwerp BEL
1955 — Szabo, Laszlo vs Alonso Fernandez-Revuelta, Rodrigo — 1/2-1/2 — Mar del Plata ARG
1955 — Dodero, Emilio vs Redolfi, Javier — 1/2-1/2 — Argentina
9.Nb3 — 33.7% (740 parties)
1952 — Morcken, Otto B vs Morel, Fernand — 0-1 — Helsinki olm
1957 — Zilber, Israel vs Aronin, Lev — 0-1 — Leningrad RUS
1958 — Larsen, Bent Ravn vs Sanguineti, Raúl Carlos — 1/2-1/2 — Portoroz izt
1962 — Garces, Napoleon vs Pazmino, Leoncio — 1-0 — Pichincha
1962 — Lewicki, Sergey vs Goldshtein, Rudolf — 1/2-1/2 — ?
9.e3 — 10.0% (219 parties)
1958 — Esposito, Alfredo vs Estonllo, M — 1-0 — Buenos Aires ARG
1959 — Faleg, Alberto vs ABDELMUNEM SAAD — 0-1 — Argentina
1963 — Zamkovskaya, Violetta Aleks vs Rotstein, Jefim — 1/2-1/2 — Kiev UKR
1972 — Karpov, Anatoly vs Rizo, V — 1-0 — Chapultepec
1976 — Bestman, Aren vs Brycki, Jerzy — 1-0 — Kuortane
9.Ndb5 — 5.2% (115 parties)
1964 — Campomanes, Florencio vs Caro, Napoleon Alberto — 1-0 — Tel Aviv olm
1965 — Mecking, Henrique vs Cotta, Eduardo — 1-0 — BRA-ch32 Rio de Jane
1967 — Nevednichy, Boris M vs Saidov, Norbai — 1-0 — Moscow RUS
1975 — Kenez, Pal vs Karafiath, Jenoe — 1/2-1/2 — ?
1981 — Rijnbergen, Michel vs Meier, Kurt — 0-1 — Zurich SUI